The Golden Age Flash'Aos time-tossed teenage daughter, Judy Garrick'Aia.k.a. the Boom'Aihas been restored to the present, but a deadly threat has returned along with her!The man who engineered the 'Auaccident'Au that gave Jay his powers has a plan more than 80 years in the making, and now the father-daughter speedsters must save a world that is wholly unprepared for the forgotten menace of'ADoctor Elemental! It'Aos a thrilling adventure spinning out of the events of Stargirl: The Lost Children and Justice Society of America from writer Jeremy Adams (The Flash, Green Lantern) and artist Diego Olortegui (Aquaman: The Becoming)! Collects Jay Garrick: The Flash #1-6.